Papers by Author: L.P. Sun

Abstract: Through the odd factor grinding experiment of microwave ferrite, the tangential and normal force were measured in different grinding parameters (wheel speed, feed rate, cutting depth, wheel size). According to the variation of the tangential force and normal force in different grinding parameters after grinding, the reasonable grinding parameters of microwave ferrite were explored. The results demonstrated that the grinding force had different variations in different grinding parameters. These could be the reference and guidance for the future processing of microwave ferrite materials.

Abstract: The grinding experiments of Quartz Fiber-Reinforced Quartz Composites（QFRQC） were conducted on MK9025 NC optical curve grinding machine. Grinding forces were measured by KISTLER dynamometer and the morphologies of the grinding surface were observed with Hatchi S-4800 SEM. In this paper, the effect of grinding orientation on the ground surface damage of QFRQC was discussed. Grinding orientation has a big influence on the ground surface damage. When grinding orientation is perpendicular to fiber orientation, the surface of the workpiece is poor; By contrast, when grinding orientation is parallel to fiber orientation, the surface of the workpiece is good; when grinding is on the fiber end-faces, the surface of the workpiece is best.

Abstract: Through the odd factor grinding experiment of microwave ferrite, the residual flexural strength and surface roughness after grinding were measured in different grinding parameters(wheel speed, feed rate, cutting depth, wheel size). The surface of microwave ferrites was observed in high magnification through an optical microscope after grinding, in order to show the variation of surface roughness in different grinding parameters. The results showed that with the increase of the surface roughness, the residual flexural strength increased.